# How do I input operation symbols?

### Input rules for operations. Operations priority sequence.

The app supports the standard order of operations: parenthetical expressions, exponents (powers), multiplication and division, addition and subtraction. When the priority of two expressions is the same, the calculation is performed from left to right.

##### Addition
For addition, use the button.

##### Subtraction
For subtraction, use the symbol.
Note: This button can also be used to input the minus sign before a negative value.

##### Multiplication
For multiplication, use the symbol.
A multiplication symbol can be omitted when it occurs immediately before the opening parenthesis or after the closing parenthesis .

3*(25.4 - 5) can be entered as 3(25.4 - 5)
(7 - 3.4)*(8 + 5.3) can be entered as (7 - 3.4)(8 + 5.3)
2*(4 - 8.03)*(6*7 - 10)*5 can be entered as 2(4 - 8.03)(6*7 - 10)5

5*x can also be entered as 5x
3*(x - 5) can be entered as 3(x - 5)
x*(5 - x) can be entered as x(5 - x)
(x + 3)*(x - 5) can be entered as (x + 3)(x - 5)
2*x(4 - 8*x)*(6*x - 10)*5 can be entered as 2x(4 - 8x)(6x - 10)5

##### Division
For division, use the button.

Note: symbol can be used for fractions input only. Do not use it for division.

##### Exponents
Exponents are typed using the power symbol

Note: exponents can be positive or negative integers and expressions with the integer result. Exponents cannot be decimals.

Exponents of numbers:
32 would be typed as 3^2
(-5)8 as (-5)^8
4(-3) as 4^(-3)
7(5-3*2) as 7^(5-3*2).

Exponents of expressions:
(5+3-2.3*4)2 would be typed as (5+3-2.3*4)^2
(1.2*3-4)(-4) as (1.2*3-4)^(-4)

##### Parentheses
The calculator supports parentheses (), including nested parentheses.

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